To gain the root permission in Android OS, in the "/init" file, please
search and add such as comment like:
[Before:]
service console /system/bin/sh
console
disable
user....
[After:]
service console /system/bin/sh
console
disable
#user....
Reboot -> then you can be root now, the command prompt will be "#"
instead of "$"
On 15 Tháng Mười Một, 14:23, "colex.john" <colex.j...@gmail.com>
wrote:
> this kind of tips may represent three issue:
>
> 1. your system is compiled as user-tag.
> to change the security flag , you can modify your ramdisk/default.prop
> ro.security to 0 , you will have the authority as root,
> this is the shortest way to hack compared to compile the system as eng-tag.
> 2. your console(ttyUSB or ttySx) is configured as shell . this is set
> from your init.rc file. (grep "console" in your init.rc :? )
> 3. if you use adb shell , please use adb remount first.
>
> good luck~
>
> On 2011年11月15日 14:59, arvr wrote:
>
>
>
>
>
>
>
> > Yes am executing as root. This is what I do (& the results) after the
> > device boots up at the command line(through the terminal)
>
> > $ ls /sys/class/leds
> > green
> > battery-led
> > lcd-backlight
> > keyboard-backlight
> > $
> > $
> > $
> > $ echo 1> /sys/class/leds/keyboard-backlight/brightness
> > cannot create /sys/class/leds/keyboard-backlight/brightness:
> > permission denied
> > $
> > $ echo 1> /sys/class/leds/green/brightness
> > cannot create /sys/class/leds/green/brightness: permission denied
>
> > I understand that by default device will boot up in root permission.
> > In the init.rc I see that the devices are "chown"ed to system system
> >>>>> chown system system /sys/class/leds/keyboard-backlight/brightness
> > So I am trying to understand this part of the world and how to get
> > things done.
> > Any information or links will be highly appreicated.
> > Thanks and Regards,
> > ARVR.
>
> > On Nov 15, 2:09 am, Earlence<earlencefe...@gmail.com> wrote:
> >> are you executing this as root?
>
> >> -earlence
>
> >> On Nov 14, 2:47 pm, arvr<venkat.raghav...@gmail.com> wrote:
>
> >>> Hi,
> >>> I am trying to access leds from command line (through the terminal),
> >>> but I am getting "Permission Denied" error and am struck on similar
> >>> issues.Can you please help me to understand what's wrong.
> >>> Environment:
> >>> a. OMAP 4430 Panda board
> >>> b. Linux 2.6.36 and Android GB 2.3.3
> >>> c. I have integrated the leds and it is visible to me as "/sys/class/
> >>> leds/green/"& "/sys/class/leds/keyboard-backlight".
> >>> When I perform,
> >>> echo 1> /sys/class/leds/green/brightness
> >>> or
> >>> echo 1> /sys/class/leds/keyboard-backlight/brightness
> >>> kernel tells me "Permission Denied". I use the regular init.rc file as
> >>> given in the OMAPPedia website, with the changes done by commenting
> >>> the line "#mount rootfs rootfs / rw remount" etc.
> >>> Similar to this, I am executing the "yavta" tool
> >>> (https://www.gitorious.org/omap4-v4l2-camera/yavta) and that too is not
> >>> executing the command, kernel reports me that no such file or folder
> >>> is present. The tool is copied in the same folder and I run it as
> >>> yavta -h
> >>> What could be reasons? Please help me out.
> >>> Thanks,
> >>> ARVR.
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